code: def setup_testing():
      TEMPLATE_PATHS.append(
          os.path.join(
              os.path.dirname(os.path.abspath(__file__)), "templates"
          )
      )
      FILTERS["custom_filter"] = lambda x: "baz"
  
file_path: dask/dask/widgets/tests/test_widgets.py
imports: from __future__ import annotations
  import os.path
  import pytest
  from dask.utils import format_bytes
  from dask.widgets import FILTERS, TEMPLATE_PATHS, get_environment, get_template
label_desc: Use image node_id 1 for calling a global function with example usage: setup_testing() without return types